Database of luminescent minerals 

BASSETITE

Mineral NOT FLUORESCENT but sometimes cited in luminescence literature

Chemical formula: Fe⁺²(UO₂)₂(PO₄)₂ 8H₂O

Family: Phosphates, Arseniates, Vanadates

Status: IMA-GP

Display mineral: NON

Luminescence:

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Phosphorescence (in the common sense of the term) observable with the naked eye:

No data

Comments:

Microscopic and microprobe study of polished sections resulted in identification of the supposed bassetite of the Jáchymov (Joachimsthal) ore district as a mixture of meta-autunite and amorphous Fe-hydroxides, which replaced the original U-mica. The pseudomorphs fluoresce mottled yellow in ultraviolet light. (see bibliography).But Bassetite itself is non-fluorescent.

Activator(s) and spectrum:

Activator(s): (UO₂)²⁺ (ion Uranyle) intrinsèque , ,  

No spectrum yet

Best localities for fluorescence (*):

• Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia, Czech Republic (Not really Bassetite but a mix of Meta-Autunite and Fe hydroxydes) ;

(*)The data are not exhaustive and are limited to a few remarkable localities for fluorescence

Bibliographic reference for luminescence:

• Luminescenza nel regno minerale, Guido Mazzoleni, fotografia Roberto Appiani, Libri Sandit, 2010, ISBN 978-88-95990-63-7 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

  http://www.mindat.org/show.php?name=Bassetite

  http://webmineral.com/data/Bassetite.shtml

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